DISSERTATION RESEARCH: Vegetation structure constraints on ANPP in arid ecosystems: Assessing the meristem limitation hypothesis

论文研究:干旱生态系统中植被结构对 ANPP 的限制:评估分生组织限制假说

基本信息

  • 批准号:
    0910027
  • 负责人:
  • 金额:
    $ 1.48万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2009
  • 资助国家:
    美国
  • 起止时间:
    2009-09-01 至 2010-08-31
  • 项目状态:
    已结题

项目摘要

Although annual precipitation is considered the major control of plant production in arid and semiarid ecosystems it accounts for only 20-40% of the interannual variability of plant production. This doctoral dissertation project is based on the hypothesis that precipitation is indeed an important control but that there are lags in the ecosystem response to changes in precipitation that mask the precipitation-productivity relationship. The student will explore the role of meristem (plant tissue capable of dividing and giving rise to new organs) limitation in creating those lags with a manipulative experiment of incoming precipitation using a combination of passive rainout shelters and irrigation in the Chihuahuan Desert in New Mexico. The experimental design creates sequences of dry and wet years and will elucidate whether there is meristem limitation, whether the magnitude of the limitation is proportional to the rainfall deviation and finally whether the effects of preceding dry years are similar but of opposite sign of the effect of wet years. Results from this project will contribute to the understanding of the effect of climate variability on carbon sequestration, primary production, cattle production and the process of shrub encroachment, issues important to everyone from cattle ranchers to city governments concerned about water supplies. Such stakeholders are interested in understanding the consequences of expected climate change (increased temperature, decreased precipitation, and increased interannual variability) on the ability of their land to provide ecosystem services on which their well-being depends.
虽然年降水量被认为是干旱和半干旱生态系统中植物生产的主要控制因素,但它仅占植物生产年际变化的20-40%。这个博士论文项目是基于这样的假设,即降水确实是一个重要的控制,但有滞后的生态系统响应的变化,降水掩盖了降水生产力的关系。学生将探讨分生组织(植物组织能够分裂,并产生新的器官)的限制,在创建这些滞后的作用与使用被动防雨庇护所和灌溉在新墨西哥州的奇瓦瓦沙漠相结合的降雨量的操纵实验。实验设计创建序列的干旱和潮湿的年份,并将阐明是否有分生组织的限制,是否限制的幅度是成比例的降雨偏差,最后是否以前的干旱年的影响是类似的,但相反的标志的影响潮湿的年份。 该项目的结果将有助于了解气候变化对碳封存、初级生产、牛生产和灌木入侵过程的影响,这些问题对从养牛场主到关心供水的市政府等每个人都很重要。这些利益攸关方有兴趣了解预期的气候变化(气温升高、降水减少和年际变化增加)对其土地提供其福祉所依赖的生态系统服务的能力的影响。

项目成果

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Osvaldo Sala其他文献

Supplying ecosystem services on US rangelands
美国草原生态系统服务的提供
  • DOI:
    10.1038/s41893-023-01194-6
  • 发表时间:
    2023-09-04
  • 期刊:
  • 影响因子:
    27.100
  • 作者:
    David D. Briske;Steven R. Archer;Emily Burchfield;William Burnidge;Justin D. Derner;Hannah Gosnell;Jerry Hatfield;Clare E. Kazanski;Mona Khalil;Tyler J. Lark;Pamela Nagler;Osvaldo Sala;Nathan F. Sayre;Kimberly R. Stackhouse-Lawson
  • 通讯作者:
    Kimberly R. Stackhouse-Lawson
Unforeseen plant phenotypic diversity in a dry and grazed world
在干燥和放牧的世界中不可预见的植物表型多样性
  • DOI:
    10.1038/s41586-024-07731-3
  • 发表时间:
    2024-08-07
  • 期刊:
  • 影响因子:
    48.500
  • 作者:
    Nicolas Gross;Fernando T. Maestre;Pierre Liancourt;Miguel Berdugo;Raphaël Martin;Beatriz Gozalo;Victoria Ochoa;Manuel Delgado-Baquerizo;Vincent Maire;Hugo Saiz;Santiago Soliveres;Enrique Valencia;David J. Eldridge;Emilio Guirado;Franck Jabot;Sergio Asensio;Juan J. Gaitán;Miguel García-Gómez;Paloma Martínez;Jaime Martínez-Valderrama;Betty J. Mendoza;Eduardo Moreno-Jiménez;David S. Pescador;César Plaza;Ivan Santaolaria Pijuan;Mehdi Abedi;Rodrigo J. Ahumada;Fateh Amghar;Antonio I. Arroyo;Khadijeh Bahalkeh;Lydia Bailey;Farah Ben Salem;Niels Blaum;Bazartseren Boldgiv;Matthew A. Bowker;Cristina Branquinho;Liesbeth van den Brink;Chongfeng Bu;Rafaella Canessa;Andrea del P. Castillo-Monroy;Helena Castro;Patricio Castro;Roukaya Chibani;Abel Augusto Conceição;Anthony Darrouzet-Nardi;Yvonne C. Davila;Balázs Deák;David A. Donoso;Jorge Durán;Carlos Espinosa;Alex Fajardo;Mohammad Farzam;Daniela Ferrante;Jorgelina Franzese;Lauchlan Fraser;Sofía Gonzalez;Elizabeth Gusman-Montalvan;Rosa Mary Hernández-Hernández;Norbert Hölzel;Elisabeth Huber-Sannwald;Oswaldo Jadan;Florian Jeltsch;Anke Jentsch;Mengchen Ju;Kudzai F. Kaseke;Liana Kindermann;Peter le Roux;Anja Linstädter;Michelle A. Louw;Mancha Mabaso;Gillian Maggs-Kölling;Thulani P. Makhalanyane;Oumarou Malam Issa;Antonio J. Manzaneda;Eugene Marais;Pierre Margerie;Frederic Mendes Hughes;João Vitor S. Messeder;Juan P. Mora;Gerardo Moreno;Seth M. Munson;Alice Nunes;Gabriel Oliva;Gaston R. Oñatibia;Guadalupe Peter;Yolanda Pueyo;R. Emiliano Quiroga;Elizabeth Ramírez-Iglesias;Sasha C. Reed;Pedro J. Rey;Víctor M. Reyes Gómez;Alexandra Rodríguez;Victor Rolo;Juan G. Rubalcaba;Jan C. Ruppert;Osvaldo Sala;Ayman Salah;Phokgedi Julius Sebei;Ilan Stavi;Colton Stephens;Alberto L. Teixido;Andrew D. Thomas;Heather L. Throop;Katja Tielbörger;Samantha Travers;Sainbileg Undrakhbold;James Val;Orsolya Valkó;Frederike Velbert;Wanyoike Wamiti;Lixin Wang;Deli Wang;Glenda M. Wardle;Peter Wolff;Laura Yahdjian;Reza Yari;Eli Zaady;Juan Manuel Zeberio;Yuanling Zhang;Xiaobing Zhou;Yoann Le Bagousse-Pinguet
  • 通讯作者:
    Yoann Le Bagousse-Pinguet
Solar ultraviolet-B radiation can affect slug feeding preference for some plant species native to a fen ecosystem in Tierra del Fuego, Argentina
  • DOI:
    10.1023/a:1026239828337
  • 发表时间:
    2003-11-01
  • 期刊:
  • 影响因子:
    1.700
  • 作者:
    Johann G. Zaller;Peter S. Searles;M. Cecilia Rousseaux;Stephan D. Flint;Martyn M. Caldwell;Osvaldo Sala;Carlos L. Ballaré;Ana L. Scopel
  • 通讯作者:
    Ana L. Scopel
Lack of intraspecific variation in resistance to defoliation in a grass that evolved under light grazing pressure
  • DOI:
    10.1023/a:1013976316924
  • 发表时间:
    2001-12-01
  • 期刊:
  • 影响因子:
    1.700
  • 作者:
    Juan Loreti;Martín Oesterheld;Osvaldo Sala
  • 通讯作者:
    Osvaldo Sala
Vulnerability of mineral-associated soil organic carbon to climate across global drylands
全球旱地与矿物质相关的土壤有机碳对气候的脆弱性
  • DOI:
    10.1038/s41558-024-02087-y
  • 发表时间:
    2024-07-30
  • 期刊:
  • 影响因子:
    27.100
  • 作者:
    Paloma Díaz-Martínez;Fernando T. Maestre;Eduardo Moreno-Jiménez;Manuel Delgado-Baquerizo;David J. Eldridge;Hugo Saiz;Nicolas Gross;Yoann Le Bagousse-Pinguet;Beatriz Gozalo;Victoria Ochoa;Emilio Guirado;Miguel García-Gómez;Enrique Valencia;Sergio Asensio;Miguel Berdugo;Jaime Martínez-Valderrama;Betty J. Mendoza;Juan C. García-Gil;Claudio Zaccone;Marco Panettieri;Pablo García-Palacios;Wei Fan;Iria Benavente-Ferraces;Ana Rey;Nico Eisenhauer;Simone Cesarz;Mehdi Abedi;Rodrigo J. Ahumada;Julio M. Alcántara;Fateh Amghar;Valeria Aramayo;Antonio I. Arroyo;Khadijeh Bahalkeh;Farah Ben Salem;Niels Blaum;Bazartseren Boldgiv;Matthew A. Bowker;Donaldo Bran;Cristina Branquinho;Chongfeng Bu;Yonatan Cáceres;Rafaella Canessa;Andrea P. Castillo-Monroy;Ignacio Castro;Patricio Castro-Quezada;Roukaya Chibani;Abel A. Conceição;Courtney M. Currier;Anthony Darrouzet-Nardi;Balázs Deák;Christopher R. Dickman;David A. Donoso;Andrew J. Dougill;Jorge Durán;Hamid Ejtehadi;Carlos Espinosa;Alex Fajardo;Mohammad Farzam;Daniela Ferrante;Lauchlan H. Fraser;Juan J. Gaitán;Elizabeth Gusman Montalván;Rosa M. Hernández-Hernández;Andreas von Hessberg;Norbert Hölzel;Elisabeth Huber-Sannwald;Frederic M. Hughes;Oswaldo Jadán-Maza;Katja Geissler;Anke Jentsch;Mengchen Ju;Kudzai F. Kaseke;Liana Kindermann;Jessica E. Koopman;Peter C. Le Roux;Pierre Liancourt;Anja Linstädter;Jushan Liu;Michelle A. Louw;Gillian Maggs-Kölling;Thulani P. Makhalanyane;Oumarou Malam Issa;Eugene Marais;Pierre Margerie;Antonio J. Mazaneda;Mitchel P. McClaran;João Vitor S. Messeder;Juan P. Mora;Gerardo Moreno;Seth M. Munson;Alice Nunes;Gabriel Oliva;Gastón R. Oñatibia;Brooke Osborne;Guadalupe Peter;Yolanda Pueyo;R. Emiliano Quiroga;Sasha C. Reed;Victor M. Reyes;Alexandra Rodríguez;Jan C. Ruppert;Osvaldo Sala;Ayman Salah;Julius Sebei;Michael Sloan;Shijirbaatar Solongo;Ilan Stavi;Colton R. A. Stephens;Alberto L. Teixido;Andrew D. Thomas;Heather L. Throop;Katja Tielbörger;Samantha Travers;James Val;Orsolya Valko;Liesbeth van den Brink;Frederike Velbert;Wanyoike Wamiti;Deli Wang;Lixin Wang;Glenda M. Wardle;Laura Yahdjian;Eli Zaady;Juan M. Zeberio;Yuanming Zhang;Xiaobing Zhou;César Plaza
  • 通讯作者:
    César Plaza

Osvaldo Sala的其他文献

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{{ truncateString('Osvaldo Sala', 18)}}的其他基金

LTREB Renewal: Long-term ecosystem responses to directional changes in precipitation amount and variability in an arid grassland
LTREB 更新:干旱草原中降水量和变异性方向变化的长期生态系统响应
  • 批准号:
    2326482
  • 财政年份:
    2023
  • 资助金额:
    $ 1.48万
  • 项目类别:
    Continuing Grant
LTREB: Long-term ecosystem responses to directional changes in precipitation amount and variability in an arid grassland
LTREB:干旱草原降水量和变异性方向变化的长期生态系统响应
  • 批准号:
    1754106
  • 财政年份:
    2018
  • 资助金额:
    $ 1.48万
  • 项目类别:
    Continuing Grant
Collabortive Research: Water availability controls on above-belowground productivity: Herbivory versus plant response
合作研究:水资源可用性对地上生产力的控制:食草与植物反应
  • 批准号:
    1456597
  • 财政年份:
    2015
  • 资助金额:
    $ 1.48万
  • 项目类别:
    Standard Grant
Workshop: Abrupt grass-woodland transitions: Determinants and consequences for ecosystem services - December 15-17, 2012 in Maldonado, Uruguay
研讨会:草地-林地突变:生态系统服务的决定因素和后果 - 2012 年 12 月 15 日至 17 日,乌拉圭马尔多纳多
  • 批准号:
    1242747
  • 财政年份:
    2012
  • 资助金额:
    $ 1.48万
  • 项目类别:
    Standard Grant
Precipitation Controls of Carbon and Nitrogen Cycles in Arid-Semiarid Ecosystems
干旱半干旱生态系统碳氮循环的降水控制
  • 批准号:
    0917668
  • 财政年份:
    2009
  • 资助金额:
    $ 1.48万
  • 项目类别:
    Standard Grant
Global Change and Ecological Complexity: A Two Workshop Proposal
全球变化和生态复杂性:两次研讨会的提案
  • 批准号:
    9634876
  • 财政年份:
    1996
  • 资助金额:
    $ 1.48万
  • 项目类别:
    Fixed Amount Award

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博士论文研究:评估更新世巨型食草动物对北极植被稳定性和恢复力的影响
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